Description
The Mossberg ‘Chainsaw’ 500 is a 12-gauge pump-action shotgun built for aggressive close-quarters handling. It features an 18-inch barrel, a distinctive forward pistol grip that gives it its name, and a top-folding rear pistol grip, all designed for one-handed operation and extreme maneuverability in tight spaces. This isn’t a subtle bird gun—it’s a purpose-built tool for dynamic defense and serious fun on the range. I’ve put a few hundred rounds of buckshot and slugs through one, and its unique ergonomics force you to shoot it differently, which is part of the appeal.
Key Features
- Dual Pistol Grip Configuration: The defining feature. A vertical foregrip and a top-folding rear grip allow for stable, one-handed control.
- Compact 18″ Barrel: Keeps the overall length down for easy maneuvering in vehicles, hallways, or brush.
- Proven Mossberg 500 Action: Built on the legendary, rugged pump-action system known for reliability.
- Top-Folding Stock: The rear grip folds over the top of the receiver, making the package even more compact for storage.
- Dual Extractors & Steel-to-Steel Lockup: Ensures positive extraction and a solid lockup for consistent performance.
- Ambidextrous Safety: The tang-mounted safety is easy to operate for both right and left-handed shooters.
Specifications & Details
| Specification | Detail |
|---|---|
| Gauge | 12 Gauge (3″ Chamber) |
| Barrel Length | 18 inches |
| Overall Length | 28.25″ (Stock Folded) |
| Capacity | 5+1 Rounds |
| Weight | Approx. 6.75 lbs |
| Action | Pump Action |
| Choke | Cylinder Bore |
Weighing in at roughly 6.75 pounds, the Chainsaw has a solid, substantial feel without being overly heavy. The 18-inch cylinder bore barrel is perfect for defensive loads and slugs, giving you a wide, effective pattern without the need for precise aiming at close ranges. Here’s the thing—this configuration is drop-in ready from the factory. You don’t need to modify a standard 500; Mossberg did the work. The price point of $440.29 makes it a very accessible specialized firearm, especially considering you’re getting a complete, dedicated platform, not a parts kit.
Who This Shotgun Is For
This is for the shooter who wants a dedicated, no-compromise home defense tool that prioritizes maneuverability above all else. It’s also for the enthusiast who enjoys unique, hands-on firearms that offer a different shooting experience on the range. It’s a natural fit for a vehicle or boat as a compact, powerful option. If you appreciate the Mossberg 500’s reliability but want it in its most aggressive, close-quarters form, this is your model. It ships to Missouri and compliant US states through your local FFL.
Pros & Cons
Pros: Incredibly compact and easy to maneuver in tight quarters. The dual-grip design offers excellent control for one-handed operation. Built on the ultra-reliable Mossberg 500 action. The folding rear grip makes storage a breeze. It’s a conversation starter at the range—people always want to try it.
Cons: Recoil management is different and can be stout with heavy loads—it requires proper technique. Not designed for precision shooting or hunting (no stock to shoulder). The unique grip style isn’t for everyone. Recoil is more direct to the wrist and arm compared to a traditional stocked shotgun.
Frequently Asked Questions
Q: Can you shoulder the folding rear grip?
A: Not really. The rear grip is a pistol grip that folds, not a shoulder stock. It’s designed to be fired from the hip or extended arms. Attempting to cheek it would be awkward and ineffective. This is a true pistol-grip shotgun.
Q: Is it compatible with other Mossberg 500 parts?
A: Yes, in key areas. The core receiver and action are standard Mossberg 500. This means many internal parts are compatible, and it can accept standard Mossberg 500 barrels (with the appropriate magazine tube cap). The forend is proprietary to this model due to the integrated vertical grip.
Q: What’s the best way to shoot it accurately?
A: Use the front vertical grip to push the gun forward firmly, locking your wrist and elbow. Bring it up to eye level, using the bead sight. It’s more of a point-and-press technique than a traditional aimed shot. Practice with light target loads first to get the feel—it’s a unique skill.
Look, the Mossberg Chainsaw 500 is a specialized tool that fills a specific niche with undeniable style and proven function. If your needs align with its design philosophy of maximum close-quarters impact and compactness, it’s an incredibly effective and fun platform. Available at firearms-missouri.com for Missouri residents and nationwide. Check its availability and start the FFL transfer process if this is the aggressive defensive tool you’ve been looking for.
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